Door-lock.



F. L. WARDROPER.

DOOR LOCK.

APPLICATION FILED JULY 25, 1913.

. 1 09 01 Patented June 2, 1914.

2 SHEETS-SHEET 1.

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FRANK L. WAR-DROPEB, OF OKLAHOMA, OKLAHOMA.

noon-Loon Specification of Letters Patent.

Application filed July 25, 1913.

Patented J mac 2, 1914.

Serial No. 781,057.

To all whom, it may concern:

Be it known that I, FRANK L. YVAnonornn, a citizen of the United States, residing at Oklahoma city, in the county of Oklahoma and State of Oklahoma, have invented certain new and useful Improvements in Door- Locks, of which the following is a specification, reference being had to the annexed drawings.

The invention pertains to looks for double doors, and more particularly to that class of doors which slide together in closing and meet each other edge-to-edge. Locks of this class commonly consist of two portions, one of which is mortised into or otherwise mounted upon the edge of one of the doors, while the other portion is likewise carried by the other door; and the two portions are adapted to interlock with each other upon meeting of the doors in closed position.

An object of the invention is to provide a lock of this class in which all openings required in the meeting faces of the two lock portions will be closed when said portions are not locked together.

Other objects and advantages of the invention will be set forth in the ensuing description. 1

Referring to the annexed drawings, which show a lock embodying the principles of the invention: Figures 1 and 2 are elevation views of the two main portions of the lock, showing the parts in unlocked position and portions of the side walls broken away. Fig. 3 is a similar View, showing the two portions of the lock locked together. Figs. 4-v and 5 are perspective views, respectively, of the meeting faces of the two lock portions shown in Figs. 1 and 2, showing also fragments of the doors in which said portions are mortised.

Referring to the several figures, in all of which like characters of reference designate like parts, the improved lock comprises two main portions 6 and 7 in the form of rectangular casings, which are adapted to contain and support other parts and be housed within mortises in the meeting edges or doors 8 and 9. The portion 6 is provided with a face-plate 10, and the portion '7 with a similar face-plate 11, both face-plates being provided with screw holes 12 to allow them to be fastened to the doors and A locking-tongue 13 is pivoted in the portion 6 just inside the face-plate 10, so as to swing in a plane parallel with the door 8.

stands vertically within, and closes, a correspondingly shaped opening 14-, the outer face 15 of said locking-tongue standing flush with the outer face 1.6 of said face-plate. The locking-tongue 13 is provided with a T -sl'iaped upper or free end 17, which is adapted to swing into looking engagement with parts later described. The face-plate 11 of the portion 7 provided with an opening 18 to allow the locking-tongue 13 to swing into said portion 7 for locking purposes, and this opening is n'ovided with a pivoted closure 19 which yieldingly held in closed position by a spring 20.

In operation, the two portions 6 and 7 of: the lock are brought together with their faces 16 and 21 in, contact, and, by actuating means later described, the tree or T end of the locking-tongue l3 is swung from its resting place in the faceplate 10 through the opening 18 of the face-plate 11 into the portion 7 the T end 17 of said locklug-tongue swinging into locking engagement behind a block 22 in said portion. ln swinging in over the curved surface 23 oi? the block 22 through an arc of substantially ninety degrees, the T head 17 of the locking-tongue 13 is placed where a slight movement of said locking tongue toward unlocked position, or a slight nioven'ient oi? the entire portion (5 upward. will not accidentally unlock the parts. [is the locking tongue 13 swings into locking engagement in the portion 7, it forces the closure 19 ot the opening 18 inward into the portion 7 against the action of the spring 20. Since the closu re 19 extends below its pivotal point 24-, as at 25, in order to be suitably engaged by the spring 20, its lower end will protrude from the opening 18. Therefore, the opening 1+ of the face-plate 10, in which the locking tongue 13 is pivoted. is extended downward fa r enough to allow the outward. swinging oi? the lower end 25 of the closure 1.) when the portions (3 and 7 are in locked position: and said locking-tongue is therefore extended downward below its pivotal point 9-6, as at 27. to close the lower end of said. opening when the parts are in the un locked position shown in Figs. 1 and 2. In addition to locking the two portions 6 and 7 together. the extension of the locking tongue 13 from the portion 6 into the other portion prevents undue relative movement or said portions in a lateral direction.

In arrz-inging key controlled mechanism to In unlocked position, this locking-tongue i move the locking-tongue 13, a bar 28 is an ranged to slide vertically in the portion 6,

this bar being adapted to be moved by any suitable form of key which may be intro duced through the key-hole 29. The upper end of the bar 28 is guided by two studs 30 which are secured to the wall 31 of the portion 6. The lower end of the bar 28 is guided on the edge next the key-hole 29 by a stud 32 on the wall 31, and is yieldably held to said stud by a leaf siring 38 whose lower end is fixed between two studs 34 and 35 in the lower edge of the portion 6. On the upper end of the bar 28, a pivotal lug 36 extends from it toward the lockingtongue 13 and is operatively connected to said locking-tongue below the pivotal point- 26 thereof by a link 37. lVhen the bar 28 is slid upward to the position shown in Fig. 3. its connecting link 37 swings the lockingtongue 13 to the locked position shown, the T head 17 of said locking-tongue swinging the closure 19 of the portion 7 open inward and swinging into locking position behind the blocks 22. Movement of the bar 28 back downward restores the parts to the unlocked position shown in Figs. 1 and 2, and the friction between said bar and the spring 33 and stud holds it in locked or unlocked position. It will be noted that, as the locking-tongue 13 swings to unlocked position, the connecting link 37 has closely approached a line A-A at right angles to the line of movement of the bar 28. thus giving said bar more forcible control of said lockingtongue justat the instant required to with draw the latter from the portion 7 and restore it fully to unlocked position.

Having thus described the invention, I claim J. In a lock of the class described, a casing having an opening in an edge wall thereof, a complemental casing having a corresponding opening in an edge wall thereof, a locking tongue pivoted within the first casing and adapted to swing through the opening thereof so as to project into the opening of the opposite casing and engage the said opposite casing, and a pivoted closure for the opening of the said opposite casing, said closure being formed with an extension which enters the opening of the first casing when the locking tongue is swung into operative position.

In a lock of the character described, the combination of a casing having an opening in an edge wall thereof, a complemental cas ing provided with a corresponding opening, a locking tongue pivoted within the first casing and adapted to be swung through the corresponding openings of the two casings into engagement with the complemental casing, a swinging closure for the opening of the complemental casing, and yielding means normally holding the closure in a closed position, said closure being formed with an extension which enters the opening of the first casing when the closure is swung into an open position.

3. In a lock of the class described, a supporting frame or casing, a locking-tongue pivoted within an edge wall of the casing and adapted to be swung outward therefrom to locking position, a sliding bar mounted in the casing to be moved by a key, and a connecting linlnbetween said bar and locking-tongue.

et. In a lock of the character described, the combination of a casing having an opening in an edge wall thereof, a pivoted locking tongue normally closing the said opening and formed with a head, a complemental casing provided with a corresponding opening, a block arranged within the complemental casing and formed with a curved wall adapted to engage the head of the locking tongue, a sliding bar mounted within the first casing, and an operative connection between the sliding bar and the locking tongue for swinging the same through the opening of the complemental casing into engagement with the curved wall of the block therein.

5. In a lock of the character described, the combination of a casing having an opening in an edge wall thereof, a pivoted locking tongue normally closing the said opening and formed with a head, a complemental casing formed with a corresponding opening, a sliding bar mounted within the first mentioned casing, and a connecting link between the sliding bar and the locking tongue for swinging the locking tongue through the opening of the complemental casing, and means within the complemental casing for engaging the head of the locking tongue.

6. In a lock of the character described, the

combination of a casing having an opening in an edge wall thereof, a pivoted locking tongue normally closing the opening, a compleniental casing formed with a corresponding opening, a pivoted closure for the said opening of the complemental casing, yielding means for holding the closure in a closed position, the closure being formed with an extension which enters the opening of the first casing when the closure is swung into an open position, a sliding bar mounted within the first casing, and a link connection between the bar and the locking tongue for swinging the locking tongue through the opening of the coinplemental casing into a locking position.

Vl itness my hand this 9 day of July, 1913.

FRANK L. WARDROPER, Ti it-nesses Orro T. Nnnson, G. C. NICHOLS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). C. 

